Home / 20,842,141.80-31,291,206.30-13,302,532.20

Finding the Fourth Proportional to 20,842,141.80, 31,291,206.30 and 13,302,532.20

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Solution

The fourth proportional to 20,842,141.80, 31,291,206.30 and 13,302,532.20 is: 19,971,665.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842,141.80 : 31,291,206.30 = 13,302,532.20 : x
  2. Step 2: Convert to fraction form
    20,842,141.80/31,291,206.30 = 13,302,532.20/x
  3. Step 3: Cross multiply
    20,842,141.80x = 31,291,206.30 × 13,302,532.20
  4. Step 4: Simplify right side
    20,842,141.80x = 416,252,279,382,592.88
  5. Step 5: Solve for x
    x = 416,252,279,382,592.88/20,842,141.80
  6. Step 6: Final answer
    x = 19,971,665.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.